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ARPE-19 and Y79 retinoblastoma cells were treated with iron oxide nanoparticles, and viability was measured with or without magnetic hyperthermia at 4 (A), 24 (B), and 72 (C) hours. n = 3, mean ± SEM, *P < 0.05, **P < 0.005, ***P < 0.0005, ****P < 0.0001 for each time point, Tukey test, N = 3.
